When describing a diamonds colour, gemmologists are actually referring to the lack of colour present in the diamond. To help separate the subtle colour differences, we follow the GIA colour grading scale that separates the colours from D being the highest and most colourless diamond, down to Z which has a very noticeable yellow body colour. D, E and F coloured diamonds are colourless, meaning they have no eye-visible body colour; they are shades of clear diamonds. Fine quality colourless diamonds are very rare and attract the highest prices. G, H, I and J colour diamonds are considered to be near-colourless, meaning they have very slight traces of body colour in them. K to Z colour diamonds have varying degrees of noticeable traces of colour.
